Mountain Hardwears Helion 2 Tent is their lightest 2 person tent, designed for the serious user. New ultralight components developed exclusively for Mountain Hardwear bring the Helion 2 in under 3 1/2 lbs: superlight fly and floor fabrics, new Atlas UL poles and 1/4 webbing with molded clips throughout. All-mesh canopy reduces weight and provides excellent ventilation and the tall front entry with tapered foot maximizes livability. MHWs patented Evolution Tension Arch provides strength when the weather turns nasty. Freestanding design ensures quick pitch. Guaranteed Watertight Construction. Pitch Light option: fly, poles and durable Tyvek footprint bring weight to 2lbs. 11oz.. Tyvek footprint sold separately. As stated on the Mountain Hardwear website: The Helion 2 sets a new benchmark for Superlight tents obliterating the 2 person, 4 lb. barrier. The new hollow-core 25D nylon fly fabric weighs 25 less than the industry standard 30D, the Superlight grommet tab system shaves 3 oz. and the new Atlas UL poles with variable tube diameter reduces the overall material used without sacrificing strength. This combination of innovative features brings the weight of the Helion 2 down to a mere 3 lbs., 5 oz.